6cb9e6dad7
...from function definitions occurring within class definitions. Done with a rewriting Clang plugin (to be pushed later). Change-Id: I9c6f2818a57ccdb361548895a7743107cbacdff8 Reviewed-on: https://gerrit.libreoffice.org/34874 Tested-by: Jenkins <ci@libreoffice.org> Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
131 lines
3.6 KiB
C++
131 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
|
|
/*
|
|
* This file is part of the LibreOffice project.
|
|
*
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
*
|
|
* This file incorporates work covered by the following license notice:
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed
|
|
* with this work for additional information regarding copyright
|
|
* ownership. The ASF licenses this file to you under the Apache
|
|
* License, Version 2.0 (the "License"); you may not use this file
|
|
* except in compliance with the License. You may obtain a copy of
|
|
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
|
|
*/
|
|
|
|
#ifndef INCLUDED_STORE_SOURCE_STORCACH_HXX
|
|
#define INCLUDED_STORE_SOURCE_STORCACH_HXX
|
|
|
|
#include <sal/config.h>
|
|
|
|
#include <memory>
|
|
|
|
#include "sal/types.h"
|
|
#include "rtl/ref.hxx"
|
|
|
|
#include "store/types.h"
|
|
#include "storbase.hxx"
|
|
#include "object.hxx"
|
|
|
|
namespace store
|
|
{
|
|
|
|
struct Entry;
|
|
|
|
/*========================================================================
|
|
*
|
|
* PageCache interface.
|
|
*
|
|
*======================================================================*/
|
|
|
|
class PageCache :
|
|
public store::OStoreObject
|
|
{
|
|
// Representation
|
|
static size_t const theTableSize = 32;
|
|
static_assert((theTableSize & (theTableSize-1)) == 0, "table size should be a power of 2");
|
|
|
|
Entry ** m_hash_table;
|
|
Entry * m_hash_table_0[theTableSize];
|
|
size_t m_hash_size;
|
|
size_t m_hash_shift;
|
|
size_t const m_page_shift;
|
|
|
|
size_t m_hash_entries; // total number of entries in table.
|
|
size_t m_nHit;
|
|
size_t m_nMissed;
|
|
|
|
static int hash_Impl(sal_uInt32 a, size_t s, size_t q, size_t m)
|
|
{
|
|
return static_cast<int>((((a) + ((a) >> (s)) + ((a) >> ((s) << 1))) >> (q)) & (m));
|
|
}
|
|
int hash_index_Impl (sal_uInt32 nOffset)
|
|
{
|
|
return hash_Impl(nOffset, m_hash_shift, m_page_shift, m_hash_size - 1);
|
|
}
|
|
|
|
Entry * lookup_Impl (Entry * entry, sal_uInt32 nOffset);
|
|
void rescale_Impl (std::size_t new_size);
|
|
|
|
public:
|
|
// Construction
|
|
explicit PageCache (sal_uInt16 nPageSize);
|
|
|
|
PageCache(const PageCache&) = delete;
|
|
PageCache& operator=(const PageCache&) = delete;
|
|
|
|
/** load.
|
|
*/
|
|
storeError lookupPageAt (
|
|
std::shared_ptr<PageData> & rxPage,
|
|
sal_uInt32 nOffset);
|
|
|
|
/** insert.
|
|
*/
|
|
storeError insertPageAt (
|
|
std::shared_ptr<PageData> const & rxPage,
|
|
sal_uInt32 nOffset);
|
|
|
|
/** update, or insert.
|
|
*/
|
|
storeError updatePageAt (
|
|
std::shared_ptr<PageData> const & rxPage,
|
|
sal_uInt32 nOffset);
|
|
|
|
/** remove (invalidate).
|
|
*/
|
|
storeError removePageAt (
|
|
sal_uInt32 nOffset);
|
|
|
|
protected:
|
|
// Destruction
|
|
virtual ~PageCache() override;
|
|
};
|
|
|
|
/*========================================================================
|
|
*
|
|
* PageCache factory.
|
|
*
|
|
*======================================================================*/
|
|
|
|
storeError
|
|
PageCache_createInstance (
|
|
rtl::Reference< store::PageCache > & rxCache,
|
|
sal_uInt16 nPageSize
|
|
);
|
|
|
|
/*========================================================================
|
|
*
|
|
* The End.
|
|
*
|
|
*======================================================================*/
|
|
|
|
} // namespace store
|
|
|
|
#endif // INCLUDED_STORE_SOURCE_STORCACH_HXX
|
|
|
|
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|